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N(2,2,0)代数的E-反演半群 被引量:5
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作者 邓方安 《数学杂志》 CSCD 北大核心 2014年第5期977-984,共8页
本文研究了N(2,2,0)代数(S,*,△,0)的E-反演半群.利用N(2,2,0)代数的幂等元,弱逆元,中间单位元的性质和同宇关系,得到了N(2,2,0)代数的半群(S,*)构成E-反演半群的条件及元素α的右伴随非零零因子唯一,且为α的弱逆元等结论,这些结果进... 本文研究了N(2,2,0)代数(S,*,△,0)的E-反演半群.利用N(2,2,0)代数的幂等元,弱逆元,中间单位元的性质和同宇关系,得到了N(2,2,0)代数的半群(S,*)构成E-反演半群的条件及元素α的右伴随非零零因子唯一,且为α的弱逆元等结论,这些结果进一步刻画了N(2,2,0)代数的结构. 展开更多
关键词 N(2 2 0)代数 E-反演半群 弱逆 中间单位元 非零零因子
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Pioneering Proposal of Floating Type Ocean Wave Power Station 被引量:2
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作者 Shun Okamoto Toshiaki Kanemoto 《Journal of Energy and Power Engineering》 2013年第4期633-638,共6页
This serial research develops the unique ocean wave power station, which is composed of the floating type platform with a pair of the floats arranged at the interval of one wavelength and the counter-rotating type wav... This serial research develops the unique ocean wave power station, which is composed of the floating type platform with a pair of the floats arranged at the interval of one wavelength and the counter-rotating type wave power unit whose runners are submerged in the seawater at the middle position of the platform. Such profiles make the flow velocity through the runners two times faster than that of the traditional fixed/caisson type OWC (oscillating water column), that is, the runners may be able to get the dynamical energy eight times on the ideal. Besides, the runners counter-drive the inner and the outer armatures of the peculiar generator, respectively, and then the relative rotational speed is two times as fast as the speed of the single runner/armature. Such characteristics make the runner diameter large, namely the output higher, as you request, because the rotational moment of the power unit hardly act on the floating type platform. This paper, as the first step, discusses the platform behaviors at the normally oscillating wave. The platform behavior is affected by not only the length and the amplitude of the wave but also the relation between the weight of the platform and the buoyancy force of the floats. 展开更多
关键词 Renewable energy ocean wave FLOAT PLATFORM counter-rotation power unit.
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